Line-lock mechanism and margin-release mechanism for typewriting machines



E; B. HESS-AND L. c. MYERASA.

LiNE LOCK MECHANISM AND MAR'GIN RELEASE'MECIMNISM FQR TYP EWRITING MACHINES.

APPLICATION HLED MAY 27,1921.

Patented May 30, 1922.

3 SHEETSQSHEET 1.

a o 0 Mg K ay P I'll/i Jig E E. BQHESS AND L.v c. MYERS. LINE LOCK MECHANISM AND MABGIN RELEASE MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION HLED MA-Y27,19 21.

Patented May 30, 1922.

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L r. gr 0 E, B. HESS AND L. CI MYERS.

LINE LOCK MECHANISM AND MARGIN RELEASE MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION FILED MAY 27, I92I- PzItented May 30, 1922.

3 SHEETS-SHEET 3 onrreo s'rnrss Wires orrlcs.

EDWARD BERNARD HESS: em) LEWIS CARY MYERS, or BROOKLYN. NEW YORK. .nssxqnons T0 ROYAL TYPEVIRITER COMPANY, Inc, on NEW YORK, N. Y.

' LINE-LOCK MECHANISM AND IlIARGIN-RELEASE MECHANISM non TYPEWRITING MACHINES.

Specificetion of Letters Patent.

indented onl so, 19:22.

Original application filed January 13, 1921, Serial No. 436,924. Divided and this application filed May T 0 all wiiom it may concern;

Be it known that we, Enwnnn BnnnAnn Hess and Lewis CARY Mvnns, both citizens of the United States, residing); in Brooklyn, county of Kings, city and State ol New York, have invent-ed certain new und useful Improvements in Line-Lock Mechanism and Mar iii-Release Mechanism for Typewriting Mae ines, of which the following is a specification.

This invention relates to line lock mechanism and margin release inechonisi'n for typewriting machines in which the universal bar, by which the escapement mechanism is operated, is locked or held fixed when the end of a printed line is reached and it also relates to mechanism whereby the typewriter carriage may be released after being arrested by a margin stop so that one or more additional characters may be printed.

In our application for patent filed Jan. 13, 1921, No. 436,924, of which this uppliction is :1 division, we have shown such mechanism embodied in a typewriting machine of the Royal type but of such construction as to provide a small, compact and light machine having the essential features of the larger or standard Royall machine but which is port-able and may be made and sold at n relatively low cost;

Our present improvements muy, however, be embodied in machines whether portable or otherwise.

According to our invention a margin stop lever is mounted centrally in reur oi" the margin stop ruilendit is providcd with on arm extending laterally to one side of the machine where it is connected by u link. with a margin release key mode of sheet mclul. its finger-piece beinglocutcd just ubovc rho upper banks of keys in the keyhourd. and its movement in opposite directions being controlled by stops formed integrally with it. A Vertically arranged line loclc lover mounted in the ccntrul portion ol the rcur part of the lnnchinc is pivotully commuted with the margin stop lever and it is operated by :1 margin stop, when the end of it line, control led by :1 margin stop. is reuchcd. The line lock lever is controlled by on urm projecting irom'the uulvcrsnl bur which, us usual, is operated by the key lcvcrsand space key and which opcrntcs the escape- Serial No. 473,167.

nient mechanism. Normally the line lock lever is out 01 the path of the line lock arm of the universal bar, but when the end of a line is reached the line lock lever is so moved as to bring its lower end into the path of said urm and prevent its movementso to arrest the movement of the universul bar and 'thus lock the type lever and prevent further printing.

In the uccolnpunying drowings:

Figure 1 Shows u vcrticnl section of so much of u typefwriting tnuchine with our improvements upplied us is necessary to illustrate our invention.

Figures 2 and I) are dctuil views of the escapemcnt mechanism in connection with which the line lock mechanism and the margin release mechanism are employed. Figure 4i is a view, on an enlarged scale, showing how thcxmurgin'stop lever and the line lock lever are mounted centrally in the rear portion oi the machine.

A port of the frame of u typcwritiu g' muchine is indicuted. at A. The plntcn is shown at ll, and its carriage at i. The curringc ruclcbnr D cooperates with a pinion E on :L

shuit l carrying u ratchet wheel (i. The

escupcment rocker ll is cquippcd with :1 rollcr-czirrying dog l und :1 linlbcr dog J. An adjustable roller-r21rrying spring arm ii is opcrzltcd by n lever ll. nrruugrcd ccntrally in rcur ol thc z'ochcr and which is connccl'cd by :x link M with thc urm 'mol' the unircrsul bar which comprises :1 shalt 7/, two side pieces n, which turn ubout lhc uxis of thc bar i l and n rcur cross-piccc 1/". An urin cxtcnds rcnrwnrdly from tho univcrsnl bur and coopcrutcs \vilh thc linc loch lover in the munncr hcrcinul'lcr dcscrihcd.

()nc ol lhc lypc kcy lcvcrs is llldh'ut'cd at l \l'hcn n c is dcprcsscd thc rcnr portion of thc univcrsul bur is ruiscd. and by mcuns ol' the link M the lcvcr I1 is actuated to opcrntc thrv cscnpcincnt. This incchunism is 'l'urllnu' illuslrutcd in our application l'orputcnl ubovc mentioned and is morc l'ully dcscribcd lhcrciu.

'lhc margin stop lever Q is pivotnlly connected ul 1 to rcin'loi cingg plulc ll uttuchcd to the rcur portion'o'i' thc l'rzunc and it co opcrntcs with n murg in stop); on a margin stop roll ti. The lever (.3 has n luterzillv cxtending arm which projects to near lho ment of thecarriage is arrested but when. the kev g is operated the upper end of the lever right-hand side of the machineand is connected by a link g with a margin stop lever 9 by means of which the margin stop lever may be moved out of the path of the margin stop. The margin release key 9 is located at the right hand side of the machine above the keyboard, being pivoted to a rod Q on which the front links of the type bar actuating mechanism is supported. The key is made of sheet metal, its finger-piece being located just above the upper bank of keys Within easy reach of the operator. Its movements in opposite directions are controlled by an arm provided with stops 9, g and its inner end g, which is bent upwards, isconnected to alink The rear endof the link g is connected with the arm g. It will be observed that. normally the margin stop lever at its upper end is in the 4 path of the margin stop S; that when a margin stop approaches the lever a bell is rung and immediately thereafter the moveis moved backward and thereby removed from the path of the margin stop.

' This operation is similar to that of other Royal machines.

The line lock nected with the front side of the margin stop lever at 23'. Its upper portion extends along the right-hand side of the margin stop lever in the path of the right-hand margin stops. From its pivot it extends downwards and its lower end is normally held away from the line lock arm 0 by a spring t, its return movement being limited by a stop 15 which engages-the lever Q.

When the end of a line, determined by the position of the margin stop, is reached the line lock lever 18 swung on. its pivot in such manner as to move its lower end. into the path of the arm 0 of the universal bar so that the universal bar cannot be operated and hence the key levers and type bars are held fixed and the escapement mechanism cannot be moved.

The mechanism is extremely simple but has been found in practice to be very ellicient,

live claim as our invention:

1. In a typewriting machine, pivot-ed key levers, a carriage, escapement mechanism therefor," a universal bar pivotally mounted in rear of thepivots of the key levers for op erating the escapement mechanism and which is provided with'a rearwardly extending, vertically moving line lock-arm,'and a line lock lever engaged by the carriage and operating upon the line lock arm. of the universal bar.

2. In a typewriting machine, a carriage,

ement mechanism therefor, universal operating" the escapeme which is provided lvitl'i a line loch margin lever T is pivotally con emons stop lever, a margin stop mounted on the rear of the pivots of the key levers having a centrally arranged rearwardly projecting svert ically moving line lock arm, a line. lock lever pivoted to move about a horizontal axis parallel with the longitudinal axis oftho machine, means for normally holding the line lock lever out of enga ement with the line lock arm of the universa bar, and means I for actuating the line lock-lever to moveits lower end into the path of the line lock arm" when the end of a line is reached. 4. In a typewriting machine the combination of a universal her having a rearwardly projectingline lock arm, esca ment meehanism operated by'the universe bar, a margin stop lever mounted in rear of the escapement mechanism, a margin stop adapted to engage themargin stop lever, and a line lock lever pivotally connected with the marginstop lever normally held-out of the edict the line lock arm of the universal at but adapted to move into the path'thereof and hold the universal bar out of operation when the end of a line is reached. v

In a typewritmg machine, oacarnagey escapement mechanism therefor, awumversal I bar for operating the escapement andwhich, i is provided -with a line lock arm, "a pivoted 10 margin stop lever, a line lock lever pivoted to the margin stop lever and a'margln stop which engages the line lock lever and moves it into engagement with said line lock arm,

thereby locking the universal bar against movement.

6. In a typewriting machine, a carriage,

escapeme'nt mechanism therefor, a universal bar for operating the escapement and whichv is provided with a line lock arm, a pivoted margin stop lever, a line lock lever movably carried thereby, a'margin stop which en: gages the linelock leveriand moves it into position to lock the universal bar against movement, and means for moving the mar- 1'15 gin stop lever to release said lock.

7, In a typewriting machine, a carriage, escapement mechanism therefor, a universal bar for operating the escapemcnt and which is provided with a line lock member, a pivoted margin stop lever, a line lock lever pivoted on the margin stop lever, a margin stop for moving the line lock lever about its pivot to engage-said member and lock the universal *bar, "and means for moving the margin stop lever about its pivot to release said lock.

8. In a typewriting machine, a carriage, a margin rail, adjustable stops thereon. margin stop mechanism cooperating with the 'ed on the front end of the machine and which is connected with the margin stop IDGClldIllSlll, said key comprising a front portion outside the machine frame, and a stop on the key which engages the machine frame.

9. In 'tvpevvriting machine, a carriage stop lever pivotally mounted at the rear of the machine and having a laterally projectinn arm extending to one side of the machine, a margin release key pivotally mounted at one side of the front of the machine above the keyboard movable about a horizontal axis extending crosswise of the machine, and a connection hetween the margin release key and the margin stop lever.

10. in a typewriting machine a margin stop lever pivot-ally mounted at the rear of the machine. a margin release key pivotally mounted at one side of the front frame of the machine ahove the keyboard movable about a horizontal axis crosswise of the machine and having stops for limiting its movements in both directions. and connections between the margin release key and the margin stop lever.

11. In a typewriting machine a margin stop lever .mounted at the rear of the machine, a margin release key pivotally mounted at the front of the machine and having an arm provided with stops for limiting its movement in both directions and having another arm which is connected with the margin stop lever.

In testimony whereof, subscribed our names.

EDWARD BERNARD HESS. LEWlSCARY MYERS.

we have hereunto 

